fix(clangd): use compilation database for all files opened

lua/lsp/config/clangd.lua

@@ -22,6 +22,10 @@ return {
             "clangd",
             "--clang-tidy",
             "--enable-config",
+
+            -- Fix for errors in files outside of project
+            -- https://clangd.llvm.org/faq#how-do-i-fix-errors-i-get-when-opening-headers-outside-of-my-project-directory
+            "--compile-commands-dir=build",
         },
         single_file_support = true,
     },